package com.xiao.springcloud.controller;

import com.xiao.springcloud.entities.CommonResult;
import com.xiao.springcloud.entities.Payment;
import com.xiao.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @Author xiaoxiaoping
 * @Date 2020/6/7 22:06
 * @Version 1.0
 */
@RestController
@Slf4j
public class OrderController {
	
	//public static final String PAYMENT_URL = "http://localhost:8001";
	public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
	@Resource
	private RestTemplate restTemplate;
	@Resource
	private LoadBalancer loadBalancer;
	
	@Resource
	private DiscoveryClient discoveryClient;
	
	@GetMapping("/consumer/payment/create")
	public CommonResult<Payment> create(Payment payment){
		return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
	}
	
	@GetMapping("/comsumer/payment/get/{id}")
	public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id){
		return restTemplate.getForObject(PAYMENT_URL+"/payment/get?id="+id,CommonResult.class);
	}
	@GetMapping("/comsumer/payment/getForEntity/{id}")
	public CommonResult<Payment> getPaymentById2(@PathVariable("id") Long id){
		ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL+"/payment/get?id="+id,CommonResult.class);
		if(entity.getStatusCode().is2xxSuccessful()){
			return entity.getBody();
		}else{
			return new CommonResult<>(444,"操作失败");
		}
	}
	
	@GetMapping("/consumer/payment/lb")
	public String getPaymentLB(){
		List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
		if(instances == null || instances.size()<=0){
			return null;
		}
		ServiceInstance serviceInstance = loadBalancer.instance(instances);
		URI uri = serviceInstance.getUri();
		return restTemplate.getForObject(uri+"/payment/lb",String.class);
	}
}
